Rotary coal-screen.



F. S. CONVERSE.

ROTARY GOAL SCREEN.

APPLIOATION FILED MAY 4, 1911.

.'1,Q79,543, Patented Nov. 25, 1913.

3 SHEETS-SHEET 1.

Ei H WITNESSES: 0R

' ATTORNEY COLUMBIA PLANOGRAPII CO..WASHINGTON. n. c.

F. S. CONVERSE.

ROTARY GOAL SCREEN.

APPLICATION IILBD MAY 4, 1911.

1,079,543. Patented Nov. 25, 1913.

3 SHEETSr-SHBET 2.

wmvsssgs: is 5 INVENTOR- 8.6. WW I 00 1 8,111

' ATTORNEY COLUMBIA PLANOURAPH co.. WASHINGTON 01c.

F. S. CONVERSE.

ROTARY GOAL SCREEN.

APPLICATION TILED MAY 4, 1911. 7 1 079 543 Patented Nov. 25, 1913.

3 SHEETSSHBET 3.

INVENTOR WITNESSES i 3; W v 3 ATTORNEY coLuMmA PLANOGRAPH cn wmmxm-ow.n. c.

UNITED STATES PATENT OFFICE.

FREDERIC S. CONVERSE, 0F BINGHAMTON, NEW YORK.

ROTARY COAL-SCREEN.

T 0 all whom it may concern Be it known that I, FREDERIO S. CONVERSE, acitizen of the United States, residing at Binghamton, in the county ofBroome and State of New York, have invented certain new and usefulImprovements in Rotary Coal-Screens, of which the following is aspecification.

My invention relates to an improvement in rotary screens for screeningand sifting coal or other substances, and it has for its obj ecttoprovide a complete, portable, sectional, rotary device which will screencoal, stone or other screenable substances and deposit the same inseparate compartments; which can be fed by means of a graduating feedgate; and which can be adjusted as to height or pitch and rest upon theground, or be changed to a portable condition without removal from thewheel carriage, being readily changed from a fixed position on theground in use, to a portable position for transportation.

with these objects in View, my invention consists in certain novelfeatures of construction and arrangement of parts as will be hereinafterfully described and pointed out in the claims, reference being had tothe accompanying drawings, in which Figure 1 is a side elevation. Fig. 2is a cross section on line 2 :2 of Fig. 1, with caster wheels and frontlegs on the ground and partitions in place, ready for use. Fig. 3 is anend view with legs off ground, ready to move. Fig. 4 is an enlargedlongitudinal section of the forward end screen, taken on line 4:4 ofFig. 5. Fig. 5 is a cross section taken on line 5 :5 of Fig. 4. Fig. 6is an enlarged cross section taken on line 6 16 of Fig. 4. Fig. 7 is anenlarged cross section taken on line 7 :7 of Fig. 1. Fig. 8 is alongitudinal section of the hopper on line 8:8 of 3. Fig. 9 is afragmentary inside face vlew of the spider or frame for the removablescreens and Fig. 10 is an end elevation of one of the rear legs.

The same reference characters denote like parts in each of the severalfigures of the drawings.

In carrying out my invention, I provide a frame A having upon it thelegs 2, 2. On

Specification of Letters Patent.

Application filed May 4, 1911.

Patented Nov. 25, 1913. Serial No. 625,684.

either leg I mount the casters 3. 3 by means of the caster supports 4. 4engaging the legs 2. 2 and being held in connection therewith by meansof the bolts 5. 5. In one end of the frame between the legs 2 and 2 Imount the cross piece 6, having the projecting flanges 8. 8. Throughthese flanges 8. 8 I eX- tend the caster supports 4. 4. Mounted on thelegs 2, 2 are the levers 9. 9 pivoted to the legs 2, 2 at the points 10.10. Mounted on the caster standards 4. 4 are the links 11. 11 havlnghinged engagement with the levers 9. 9 at the point 12. 12, all as shownin Fig. 3. Mounted on the cross piece 6 are the hooks 13. 13 under whichthe levers 9'. 9 may be clamped and held. The caster standards 4. 4 passloosely through flanges 8. 8 allowing the flanged cross pieces 8.8 tomove up and down the standards, 4. 4. On the frame A, I mount the bodyportion B of the rotary screen. This body portion has within it theshaft 18 which rests in the bearings 14. 14, mounted on frame A. Thebody port-ion B is com posed, aside from the shaft 18, of the wheel orspider bodies, which in turn are composed of the hub 15, the spokes 16.16. 16 etc., and the outside spider or band, 17 each wheel or spiderbody being mounted on the shaft 18. On the wheel bands or spiders, 17.17, I mount the screen sections of the body B, each section comprising ahalf section D and D of the body portion B. These half screen sectionsare composed of inside bands, 18, on which is mounted the screen wire19, and outside the screen wire are mounted the outside bands, 20.Between the outside bands 20 extend the bands a, which bands together,form the frame work of the screen half section. On the outside band ofthe half section are mounted the ears, 21, 21. Through the inside bands18, the screen wire 19 and the outside bands 20 are the nut bolts 22. 22holding the bands and wire firmly together in each half section. In thesurface of the spider or wheel band are the slots, 23. 23. In theinterior surface of the inner bands 18 I mount alternate flat headedbolts and nuts 24, which enter into and engage the slots 23. Also withinthe inner bands 18 are the bolt nuts 25, engaging slot 23. On theoutside of the band a, I mount the lip b, so that when the sectionsunite the lip 1) passes over and rests upon the band a of the oppositehalf section. To have a more perfect union between the half sections, Ihave the interior bands 18 and the outside bands 20 overlap to someextent at their ends so that the joints between these two bands do notoccur at the same place.

To mount a half section of the screen B on the spider or wheel band 17,I place the half section upon the outside surface of the spider or wheelband, so that a fiat headed nut 24 engages with the slot 23, and throughother slots I mount the nut bolts 25, which hold the half sectionsecurely to the spider or wheel band surface. Thus having mounted theopposite sections between the cars 21. 21, I pass the nut bolts 26. 26therethrough which draw the half sections firmly together. Mounted onthe shaft 18, I have the sprocket wheel 27. Mounted on the wheel band orspider at the upper end of the shaft and screen body, I have the outerflange 28. Mounted on one side of the frame A I have the usual crankshaft 29 with handle 30, carrying the sprocket wheel 31 and between 31and 27 extends the connecting chain 32. Mounted at the end of frame A, Ihave the hopper E, having the chute 33 and the gate 34. Mounted on theinner end of hopper E I have the post 35, on which is the lever 36,pivoted at 37 having on it the notches 38, 38 etc., and having hingedconnection withthe gate 34. Pivoted to the hopper is the hook 39engaging the notches on lever 36, while supporting the body portion ofthe hopper is the brace, 40. By means of the notched lever 36 and hook39, the gate 34 can be raised to any desired position. Mounted on andprojecting downward from the under side of frame A, I have the guides41. 41 etc., engaging and supporting the movable partitions, 42. 42. 42etc.

In the operation of my device, when I have rolled the frame A with itsscreen body to a given position for screening coal, I unhook the levers9. 9 from the hooks 13. 13 which permits the frame body to slide downthe standards 4. 4 until the legs 2, 2 rest upon the ground. I thenslide the partitions 42. 42 etc. into the receiving guides, 41. 41 etc.I then fill the hopper with coal or other substance to be screened andraise the gate 34 to a given position, allowing an opening sufficientlylarge according to the size of the coal or other substance to bescreened, to properly govern the speed of the coal or other substancepassing into the screen. I then turn the crank shaft, 29, which in turnrevolves the screen body B, while the coal or other substance flows intothe screen body from the hopper E until the full hopper of coal or othersubstance is properly screened. I then shut down the hopper gate andrefill the hopper, raise the gate and proceed with turning the screenbody again as before. It will be noted that the crank shaft 29 is somounted that connection may be made with other power than hand power inorder to properly revolve the screen. The coal passing into the screenand passing over the screen sections D D: D D: D D the screen wire ineach section being of a different size, the particles of coal or othersubstance pass through according to the size of the mesh in the screenwire over which they pass, and thus between the partitions 42. 42 etc.,are left the different sizes of coal or other substances. The remainingcoal or substance not screened falls out at the open end of the screenat F. Desiring to again move the screen body, I take out the partitions42. 42 etc., I press down the levers 9. 9, which in turn raise the legs2, 2 of the frame body off from the ground and hook the levers 9. 9underneath the hooks 13. 13, and thus the screen body is ready to bemoved to another given position.

Having thus described my invention, what I claim as new and for which Idesire Letters Patent, is as follows:

1. A rotary screen comprising spider supports mounted on a central shaftand rotatable therewith, circular bands upon said supports forming asupport for a cylindrical screen, screen sections, and bands attached tosaid screen support and constituting a framework for said screensections, said bands being arranged concentrically in pairs and with theends of one band overlapping the ends of another, substantially asdescribed.

2. A rotary screen comprising 5 )ider supports mounted on a central shat and rotatable therewith, circular bands upon said supports forming asupport for a cylindrical screen, screen sections, and a framework forsaid screen sections comprising inner and outer circular and transversebands attached to said screen support and with the meeting edges orjoints of said bands arranged in different planes to break joints witheach other, substantially as described.

3. A rotary screen comprising a support for a cylindrical screen, screensections, supporting bands for said screen sections arranged bothinteriorly and exteriorly thereof, and means for clamping saidsupporting bands of adjoining sections at their meeting ends to eachother upon said support, substantially as described.

4. A rotary screen comprising spider supports mounted on a central shaftand rotatable therewith, circular bands upon said supports forming asupport for a cylindrical screen and provided with circumferentiallyextending slots therein spaced apart, In testimony whereof I haveaflixed my screen sections, and means for zittaehlng signature inpresence of tWo Witnesses. sald screen sectlons to said cn'cular bands Tcomprising bolts passing through holes in FREDERIO COLVERSE' said screensections and the slots in said Vitnesses: bands, and means for clampingsaid screen S. A. VALENTINE, sections together at their meeting edges.BENJAMIN BAKER.

Copies of this patent may be obtained for five cents each, by addressingthe Gommis sioner of Patents, Washington, D. G.

